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ruler definition


This page has 4 definitions of ruler in English and Cebuano. Ruler is a noun and verb. Also define these 12 related words and terms: rigid, flat, rectangular, graduation, unit, measurement, straightedge, marking, rule, govern, dominion, and ruler.

English ruler definition

A ruler (measuring device).


From Middle English reuler; equivalent to rule +‎ -er.



ruler (plural rulers)

  1. A (usually rigid), flat, rectangular measuring or drawing device with graduations in units of measurement; a straightedge with markings.
  2. A person who rules or governs; someone or something that exercises dominion or controlling power over others.
    • 1983, Richard Ellis, The Book of Sharks, Knopf, →ISBN, page 122:
      The carcharhinids are unquestionably the rulers of the seas, because of their abundance, their strength and speed, and their unchallenged position as the number one predators in the marine ecosystem.
    • Govern definition
      To make and administer the public policy and affairs of; to exercise sovereign authority in. (1 of 7 govern definitions)

Usage notes

In American English, the word "ruler" is often used specifically to refer to such a measuring device that is one foot (12 inches) long. Used in contrast with "yardstick" and "meter stick."




The translations below need to be checked and inserted above into the appropriate translation tables, removing any numbers. Numbers do not necessarily match those in definitions. See instructions at Dictionary:Entry layout § Translations.


ruler (third-person singular simple present rulers, present participle rulering, simple past and past participle rulered)

  1. (transitive) To beat with a ruler (as a traditional school punishment).

Further reading


Cebuano ruler definition


From English ruler, from Middle English reuler.


  • Hyphenation: ru‧ler



  1. a ruler